A Totally New Concept In VARIABLE SPEED DRIVES     The Accuspeed variable speed drive is a totally new concept in design and materials application.  Accuspeed is intended for those industrial equipment applications requiring precise variable speed control and postive power transmission.           UNIQUE PULLEY DESIGN     Accuspeed utilizes a V-ribbed belt concept in combination with modern materials technology to carry the traditional accuracy of the expanding pulley to new performance standards.  There are three major elements in the Accuspeed pulley design; a face plate, 12 precision machined segments on which the belt rides, and a cone.  The face plate and the cone, which are the carriers for the machined segments, are machined of an engineering polymer possessing high tensile strength and excellent ductility.  The grooves in the face plate and the cone are precisely matched to accommodate the segments and their keepers and permit free movement during the expansion and retraction of the pulley surface. OPERATING PRINCIPLE                                                              Varying the position of the cone in relation to the face plate causes the segments to move outwardly or inwardly in the grooves of the face plate, thereby expanding or contracting the surface of the pulley.   This action is smooth, accurate and stepless, assuring infinitely variable speed.                                                                       V-RIBBED BELT    Because the V-ribbed driving surface of the belt bottoms completely on the precision-machined pulley segments, maximum friction between the belt and the pulley is acheived, resulting in an extremely high load carrying capacity and positive power transmission.  Belt tension is easily established and maintained.  The quality of the belt used assures long service life.

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